Where will the atmospheric pressure be greater-at ground level or at the top of high mountain ?

What type of pressure is involved in the filling of a liquid in a syringe?

What substance present in our body balances the atmospheric pressure acting on us?

Name any two devices used in everyday life which work on the existence of atmospheric pressure.

If a vacuum is created between two Magdeburg hemispheres joined together, they cannot be separated easily, What presses the hemispheres together ?